Yamamoto® Nutrition Arginine PRO Kyowa® Quality is a nutritional supplement of L-arginine indicated in case of increased need for L-arginine, especially for athletes who practice strenuous physical activity. The product is 100% Kyowa® brand Arginine HCl, a guarantee of quality. The Kyowa Quality (KQ) brand is comprised of a wide range of ultra-pure amino acids and related compounds provided by Kyowa Hakko BIO Co. LTD., A world leader with more than 60 years of experience and a reputation for strict quality assurance. With its innovative fermentation technology, which has been built over the years. Kyowa® has become a trusted pioneer in the healthcare field. How to use: swallow 2 tablets a day with water or other liquids 20/30 minutes before the time you want to encourage nitric oxide production or at night before going to bed on an empty stomach. Do not chew the product.